arch/powerpc/boot/Makefile

   1 # Makefile for making ELF bootable images for booting on CHRP
   2 # using Open Firmware.
   3 #
   4 # Geert Uytterhoeven    September 1997
   5 #
   6 # Based on coffboot by Paul Mackerras
   7 # Simplified for ppc64 by Todd Inglett
   8 #
   9 # NOTE: this code is built for 32 bit in ELF32 format even though
  10 #       it packages a 64 bit kernel.  We do this to simplify the
  11 #       bootloader and increase compatibility with OpenFirmware.
  12 #
  13 #       To this end we need to define BOOTCC, etc, as the tools
  14 #       needed to build the 32 bit image.  These are normally HOSTCC,
  15 #       but may be a third compiler if, for example, you are cross
  16 #       compiling from an intel box.  Once the 64bit ppc gcc is
  17 #       stable it will probably simply be a compiler switch to
  18 #       compile for 32bit mode.
  19 #       To make it easier to setup a cross compiler,
  20 #       CROSS32_COMPILE is setup as a prefix just like CROSS_COMPILE
  21 #       in the toplevel makefile.
  22
  23 all: $(obj)/zImage
  24
  25 HOSTCC          := gcc
  26 BOOTCFLAGS      := $(HOSTCFLAGS) -fno-builtin -nostdinc -isystem \
  27                    $(shell $(CROSS32CC) -print-file-name=include) -fPIC
  28 BOOTAFLAGS      := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc
  29
  30 ifeq ($(call cc-option-yn, -fstack-protector),y)
  31 BOOTCFLAGS      += -fno-stack-protector
  32 endif
  33
  34 BOOTCFLAGS      += -I$(obj) -I$(srctree)/$(obj)
  35
  36 zlib       := inffast.c inflate.c inftrees.c
  37 zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
  38 zliblinuxheader := zlib.h zconf.h zutil.h
  39
  40 $(addprefix $(obj)/,$(zlib) gunzip_util.o main.o): \
  41         $(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))
  42
  43 src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \
  44                 ns16550.c serial.c simple_alloc.c div64.S util.S \
  45                 gunzip_util.c elf_util.c $(zlib) devtree.c \
  46                 44x.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c
  47 src-plat := of.c cuboot-83xx.c cuboot-85xx.c holly.c \
  48                 cuboot-ebony.c treeboot-ebony.c prpmc2800.c
  49 src-boot := $(src-wlib) $(src-plat) empty.c
  50
  51 src-boot := $(addprefix $(obj)/, $(src-boot))
  52 obj-boot := $(addsuffix .o, $(basename $(src-boot)))
  53 obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib))))
  54 obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat))))
  55
  56 quiet_cmd_copy_zlib = COPY    $@
  57       cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
  58
  59 quiet_cmd_copy_zlibheader = COPY    $@
  60       cmd_copy_zlibheader = sed "s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
  61 # stddef.h for NULL
  62 quiet_cmd_copy_zliblinuxheader = COPY    $@
  63       cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
  64
  65 $(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
  66         $(call cmd,copy_zlib)
  67
  68 $(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
  69         $(call cmd,copy_zlibheader)
  70
  71 $(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/%
  72         $(call cmd,copy_zliblinuxheader)
  73
  74 $(obj)/empty.c:
  75         @touch $@
  76
  77 $(obj)/zImage.lds $(obj)/zImage.coff.lds: $(obj)/%: $(srctree)/$(src)/%.S
  78         @cp $< $@
  79
  80 clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \
  81                 empty.c zImage.coff.lds zImage.lds
  82
  83 quiet_cmd_bootcc = BOOTCC  $@
  84       cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $<
  85
  86 quiet_cmd_bootas = BOOTAS  $@
  87       cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
  88
  89 quiet_cmd_bootar = BOOTAR  $@
  90       cmd_bootar = $(CROSS32AR) -cr $@.$$$$ $(filter-out FORCE,$^); mv $@.$$$$ $@
  91
  92 $(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c FORCE
  93         $(call if_changed_dep,bootcc)
  94 $(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S FORCE
  95         $(call if_changed_dep,bootas)
  96
  97 $(obj)/wrapper.a: $(obj-wlib) FORCE
  98         $(call if_changed,bootar)
  99
 100 hostprogs-y     := addnote addRamDisk hack-coff mktree
 101
 102 targets         += $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a)
 103 extra-y         := $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
 104                    $(obj)/zImage.lds $(obj)/zImage.coff.lds
 105
 106 wrapper         :=$(srctree)/$(src)/wrapper
 107 wrapperbits     := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \
 108                         $(wrapper) FORCE
 109
 110 #############
 111 # Bits for building various flavours of zImage
 112
 113 ifneq ($(CROSS32_COMPILE),)
 114 CROSSWRAP := -C "$(CROSS32_COMPILE)"
 115 else
 116 ifneq ($(CROSS_COMPILE),)
 117 CROSSWRAP := -C "$(CROSS_COMPILE)"
 118 endif
 119 endif
 120
 121 # args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd
 122 quiet_cmd_wrap  = WRAP    $@
 123       cmd_wrap  =$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) \
 124                 $(if $3, -s $3)$(if $4, -d $4)$(if $5, -i $5) vmlinux
 125
 126 image-$(CONFIG_PPC_PSERIES)             += zImage.pseries
 127 image-$(CONFIG_PPC_MAPLE)               += zImage.pseries
 128 image-$(CONFIG_PPC_IBM_CELL_BLADE)      += zImage.pseries
 129 image-$(CONFIG_PPC_PS3)                 += zImage.ps3
 130 image-$(CONFIG_PPC_CELLEB)              += zImage.pseries
 131 image-$(CONFIG_PPC_CHRP)                += zImage.chrp
 132 image-$(CONFIG_PPC_EFIKA)               += zImage.chrp
 133 image-$(CONFIG_PPC_PMAC)                += zImage.pmac
 134 image-$(CONFIG_PPC_HOLLY)               += zImage.holly-elf
 135 image-$(CONFIG_PPC_PRPMC2800)           += zImage.prpmc2800
 136 image-$(CONFIG_DEFAULT_UIMAGE)          += uImage
 137
 138 ifneq ($(CONFIG_DEVICE_TREE),"")
 139 image-$(CONFIG_PPC_83xx)                += cuImage.83xx
 140 image-$(CONFIG_PPC_85xx)                += cuImage.85xx
 141 image-$(CONFIG_EBONY)                   += treeImage.ebony cuImage.ebony
 142 endif
 143
 144 # For 32-bit powermacs, build the COFF and miboot images
 145 # as well as the ELF images.
 146 ifeq ($(CONFIG_PPC32),y)
 147 image-$(CONFIG_PPC_PMAC)        += zImage.coff zImage.miboot
 148 endif
 149
 150 initrd-  := $(patsubst zImage%, zImage.initrd%, $(image-n) $(image-))
 151 initrd-y := $(patsubst zImage%, zImage.initrd%, \
 152                 $(patsubst treeImage%, treeImage.initrd%, $(image-y)))
 153 initrd-y := $(filter-out $(image-y), $(initrd-y))
 154 targets += $(image-y) $(initrd-y)
 155
 156 $(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz
 157
 158 dts-  := $(patsubst zImage%, zImage.dts%, $(image-n) $(image-))
 159 dts-y := $(patsubst zImage%, zImage.dts%, $(image-y))
 160 dts-y := $(filter-out $(image-y), $(dts-y))
 161 targets += $(image-y) $(dts-y)
 162
 163 dts_initrd-  := $(patsubst zImage%, zImage.dts_initrd%, $(image-n) $(image-))
 164 dts_initrd-y := $(patsubst zImage%, zImage.dts_initrd%, $(image-y))
 165 dts_initrd-y := $(filter-out $(image-y), $(dts_initrd-y))
 166 targets += $(image-y) $(dts_initrd-y)
 167
 168 $(addprefix $(obj)/, $(dts_initrd-y)): $(obj)/ramdisk.image.gz
 169
 170 # Don't put the ramdisk on the pattern rule; when its missing make will try
 171 # the pattern rule with less dependencies that also matches (even with the
 172 # hard dependency listed).
 173 $(obj)/zImage.dts_initrd.%: vmlinux $(wrapperbits) $(dts) $(obj)/ramdisk.image.gz
 174         $(call if_changed,wrap,$*,$(dts),,$(obj)/ramdisk.image.gz)
 175
 176 $(obj)/zImage.dts.%: vmlinux $(wrapperbits) $(dts)
 177         $(call if_changed,wrap,$*,$(dts))
 178
 179 $(obj)/zImage.initrd.%: vmlinux $(wrapperbits)
 180         $(call if_changed,wrap,$*,,,$(obj)/ramdisk.image.gz)
 181
 182 $(obj)/zImage.%: vmlinux $(wrapperbits)
 183         $(call if_changed,wrap,$*)
 184
 185 $(obj)/zImage.ps3: vmlinux
 186         $(STRIP) -s -R .comment $< -o $@
 187
 188 $(obj)/zImage.initrd.ps3: vmlinux
 189         @echo "  WARNING zImage.initrd.ps3 not supported (yet)"
 190
 191 $(obj)/zImage.holly-elf: vmlinux $(wrapperbits)
 192         $(call if_changed,wrap,holly,$(obj)/dts/holly.dts,,)
 193
 194 $(obj)/zImage.initrd.holly-elf: vmlinux $(wrapperbits) $(obj)/ramdisk.image.gz
 195         $(call if_changed,wrap,holly,$(obj)/dts/holly.dts,,$(obj)/ramdisk.image.gz)
 196
 197 $(obj)/uImage: vmlinux $(wrapperbits)
 198         $(call if_changed,wrap,uboot)
 199
 200 # CONFIG_DEVICE_TREE will have "" around it, make sure to strip them
 201 dts = $(if $(shell echo $(CONFIG_DEVICE_TREE) | grep '^/'),\
 202         ,$(srctree)/$(src)/dts/)$(CONFIG_DEVICE_TREE:"%"=%)
 203
 204 $(obj)/cuImage.%: vmlinux $(dts) $(wrapperbits)
 205         $(call if_changed,wrap,cuboot-$*,$(dts))
 206
 207 $(obj)/treeImage.initrd.%: vmlinux $(dts) $(wrapperbits)
 208         $(call if_changed,wrap,treeboot-$*,$(dts),,$(obj)/ramdisk.image.gz)
 209
 210 $(obj)/treeImage.%: vmlinux $(dts) $(wrapperbits)
 211         $(call if_changed,wrap,treeboot-$*,$(dts))
 212
 213 $(obj)/zImage:          $(addprefix $(obj)/, $(image-y))
 214         @rm -f $@; ln $< $@
 215 $(obj)/zImage.initrd:   $(addprefix $(obj)/, $(initrd-y))
 216         @rm -f $@; ln $< $@
 217 $(obj)/zImage.dts:      $(addprefix $(obj)/, $(dts-y))
 218         @rm -f $@; ln $< $@
 219 $(obj)/zImage.dts_initrd:       $(addprefix $(obj)/, $(dts_initrd-y))
 220         @rm -f $@; ln $< $@
 221
 222
 223 install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y))
 224         sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $<
 225
 226 # anything not in $(targets)
 227 clean-files += $(image-) $(initrd-) zImage zImage.initrd cuImage.* \
 228         treeImage.* zImage.dts zImage.dts_initrd
 229
 230 # clean up files cached by wrapper
 231 clean-kernel := vmlinux.strip vmlinux.bin
 232 clean-kernel += $(addsuffix .gz,$(clean-kernel))
 233 # If not absolute clean-files are relative to $(obj).
 234 clean-files += $(addprefix $(objtree)/, $(clean-kernel))